Donut or PI Chinese stromatolite Bolivia A

DON-STRO-01
Origin: Bolivia
Grade: A

Available sizes:
30mm
40mm

Origin:
Bolivia

Grade:
A = good

Donut or Chinese stromatolite PI from Bolivia
2 sizes to choose from (30mm, 40mm)
Colors and patterns may vary from one stone to another
Free waxed cotton cord

The stromatolite is a limestone rock or double-layer laminated biogenic and organic marine structure.
The first fossilized stromatolites date back more than 3 billion years. They are the trace of the first forms of life in fixed colonies.